PFAS Contamination in Florida Private Wells: What Central Florida Well Owners Need to Know

Private well owners in Central Florida are responsible for testing their own water for PFAS, a family of synthetic chemicals called forever chemicals that do not break down naturally in the environment. The U.S. Environmental Protection Agency finalized the first enforceable federal drinking water limits for PFAS in April 2024, setting Maximum Contaminant Levels of 4 parts per trillion for PFOA and PFOS. Those limits apply only to public water systems. If your household relies on a private well, no government agency tests your water, monitors your exposure, or notifies you when a contamination source is identified nearby. Central Florida's karst limestone geology allows contaminants to travel through the aquifer faster than in most other regions. Military installations and industrial sites in Florida with documented histories of firefighting foam use are among the principal PFAS sources identified in public records. Reverse osmosis systems certified under NSF/ANSI Standard 58 are the most effective residential treatment option, removing more than 95 percent of PFOA and PFOS from drinking water.

What are PFAS and why should private well owners in Florida care?

PFAS stands for per- and polyfluoroalkyl substances, a group of more than 12,000 synthetic compounds manufactured since the 1940s. They appear in nonstick cookware coatings, food packaging, stain resistant fabrics, water resistant outdoor gear, and the aqueous film forming foam used to suppress flammable liquid fires at military bases, airports, and industrial facilities. The carbon fluorine bond at the core of PFAS chemistry is among the strongest in organic chemistry. That stability is what makes these compounds persist in soil, groundwater, and biological tissue for decades without breaking down. The informal name "forever chemicals" describes this persistence accurately.

When PFAS enter soil from a spill, landfill, or land application of biosolids containing PFAS, they migrate downward through the soil column and into groundwater. Once in groundwater, they can travel for miles along aquifer flow paths. Private well owners receive raw groundwater from their well without the treatment that public utilities apply. If PFAS are present in the aquifer near your well, they are likely present in your water. No color change, no odor, and no taste indicates PFAS contamination. Laboratory analysis is the only detection method available to a well owner.

The health concerns associated with PFAS exposure are summarized by the CDC's National Institute for Occupational Safety and Health, which identifies associations between elevated PFOA and PFOS exposure and increased cholesterol levels, reduced immune response in children, thyroid disruption, and elevated risk of certain cancers (CDC PFAS health effects page). For a broader look at what Central Florida well owners face in their source water, see our guide comparing well water versus city water in Central Florida.

Does the EPA's 2024 PFAS drinking water rule protect private well owners?

The EPA's National Primary Drinking Water Regulation for PFAS, finalized in April 2024, establishes enforceable Maximum Contaminant Levels for six PFAS compounds. PFOA and PFOS each have an MCL of 4 parts per trillion. PFHxS, PFNA, and HFPO-DA (GenX) each have an MCL of 10 parts per trillion. A hazard index approach governs mixtures of those compounds. Public water systems have until 2029 to complete monitoring and meet compliance limits. Full regulatory text and technical background are at EPA's PFAS drinking water regulation page.

The Safe Drinking Water Act, the federal statute authorizing those MCLs, applies only to public water systems serving 25 or more people or having 15 or more service connections. Private wells serving individual households fall outside its scope entirely. That boundary is a deliberate feature of federal law. The EPA acknowledges this gap in its private well resources at epa.gov/privatewells, but closing it requires new legislation, not agency rulemaking.

At the state level, the Florida Department of Health administers the private well program under Chapter 62-532 of the Florida Administrative Code. The DOH requires a water quality test at new well completion and publishes guidance at Florida DOH private well water guidance. PFAS is not among the parameters mandated by the completion test or required by any ongoing testing schedule for existing wells. The Florida DEP source water protection program (FDEP source water protection) addresses public system wellheads, not private wells. For the full regulatory picture for private well owners, see our guide to Florida well construction permits and groundwater rules.

The practical result: if your private well has PFAS at concentrations above the EPA MCLs, no agency will notify you. No sampling will occur unless you arrange it. Starting with our comprehensive Florida well water testing guide will orient you on what to test for and what your results mean.

Are Central Florida private wells at risk of PFAS contamination?

Risk varies by location, well depth, and proximity to PFAS sources. Not every Central Florida private well faces elevated PFAS risk. However, a 2023 U.S. Geological Survey study of private wells across the United States found at least one PFAS compound at or above health reference levels in approximately 45 percent of tested wells (USGS Florida groundwater research). That figure covers the full range of aquifer types and geographies in the national study sample. It establishes that PFAS in private wells is common enough to treat as a real possibility rather than a remote risk.

Central Florida's porous karst limestone geology is a relevant local factor. The Floridan Aquifer system, the source for most Central Florida residential wells, underlies a karst landscape of sinkholes, dissolution channels, and fractures. These features allow surface contamination to reach the aquifer faster and over greater distances than in regions without karst geology. Our article on well drilling in Central Florida's karst counties describes how this geology affects well siting and construction. The same karst pathways that complicate well construction also shorten the travel time for dissolved contaminants between the surface and the aquifer.

Public utilities in Central Florida draw from the same Floridan Aquifer but treat and monitor their supply before it reaches customers. Private well owners receive untreated aquifer water with no government monitoring. That distinction is the reason PFAS risk falls entirely on the private well owner to investigate. Our guide on well water versus city water in Central Florida addresses this in detail. For a complete picture of what to test for in a Central Florida private well, our Florida well water testing guide covers the full parameter list with context on each.

Which military bases and industrial sites in Florida have documented PFAS?

The EPA maintains a publicly searchable PFAS Analytic Tools database mapping documented PFAS sites nationwide. In Florida, military installations with histories of aqueous film forming foam use for fire suppression training are among the most significant documented sources. AFFF formulations used before the mid-2000s contained PFOS and PFOA as primary active ingredients. The following installations appear in public EPA and FDEP records:

MacDill Air Force Base (Hillsborough County): MacDill has documented AFFF use and active PFAS groundwater investigation programs recorded in FDEP records. It is located in the Tampa area, roughly 75 miles from the Orlando metro. Groundwater flow direction from the base and local aquifer characteristics determine whether any PFAS plume affects private wells in its vicinity.

Patrick Space Force Station (Brevard County): Patrick SFS, formerly Patrick Air Force Base, is on Florida's Space Coast with confirmed AFFF history and active PFAS investigation programs documented in FDEP records. Brevard County sits at the eastern edge of the Central Florida region, making it the most geographically relevant of the documented Florida military PFAS sites to Central Florida well owners.

Eglin and Tyndall Air Force Bases (Florida Panhandle): Both installations carry extensive PFAS documentation in FDEP records due to decades of AFFF use. While located in northwest Florida, their significance is demonstrating the scale of PFAS contamination associated with military AFFF programs statewide. Florida has no shortage of documented AFFF sites.

In Central Florida itself, the EPA and FDEP databases include industrial and historical use areas in Orange County and other Central Florida counties. Well owners can search by county through the FDEP database and through the EPA PFAS mapping tools. Our guides on Florida well drilling permits and well drilling in Central Florida explain how new well placement accounts for known contamination sources during the permitting process.

How do I test my Central Florida well for PFAS?

PFAS testing requires certified laboratory analysis. Unlike hardness or iron, which can be estimated with field meters, PFAS concentrations in drinking water are measured in parts per trillion, a level of sensitivity requiring specialized analytical equipment. The two EPA-approved methods for PFAS in drinking water are EPA Method 533 and EPA Method 537.1. Both detect PFAS at concentrations as low as 1 to 2 parts per trillion. When ordering a PFAS test, ask specifically whether the lab is certified for EPA Method 533 or 537.1 and what compounds are included in the panel.

The Florida DOH Environmental Laboratory Certification Program maintains a directory of labs certified for PFAS analysis in Florida. Access that directory through the Florida DOH private well water program. Sample collection requires specific containers the lab provides. Many standard plastic containers leach PFAS compounds that would contaminate the sample before it reaches the lab. Follow the lab's instructions exactly; PFAS sample collection is not interchangeable with collection procedures for standard water quality parameters.

PFAS panels vary in how many compounds they test. A comprehensive panel using EPA Method 533 typically covers 25 or more PFAS compounds. A more limited panel may cover only the six compounds with EPA MCLs. For wells near military installations or industrial sites, knowing whether lesser-regulated PFAS compounds are present in addition to PFOA and PFOS provides more complete information. Florida law does not require private well owners to test for PFAS; you arrange and pay for the test yourself. For context on testing for other region-specific contaminants, see our article on iron and sulfur in Marion and Alachua County well water.

What treatment systems remove PFAS from well water?

Two residential treatment technologies have documented PFAS removal performance validated against EPA analytical methods: reverse osmosis and activated carbon filtration. Both are evaluated under NSF International certification programs requiring product testing against specific challenge conditions. A standard water softener, which many Central Florida well owners already operate for hardness control, does not remove PFAS. Softening is still worthwhile for equipment protection and soap efficiency, but it does not address PFAS separately and carries no NSF certification for PFAS reduction.

Reverse osmosis is the more effective option for PFAS removal. RO membranes reject PFAS compounds through size exclusion and charge effects. Systems certified under NSF/ANSI Standard 58 for PFOA and PFOS reduction have demonstrated removal to below the standard's performance limits under controlled test conditions. For drinking water applications, a point of use RO system installed under the kitchen sink is the most practical approach for most households. Central Florida's hard well water accelerates membrane fouling; installing a water softener upstream of an RO system protects membrane life significantly. Our whole house well water filtration guide and well water filtration guide explain how RO integrates with other treatment components for a complete system.

Granular activated carbon and activated carbon block filters adsorb PFAS onto the carbon surface. Systems certified under NSF/ANSI Standard 53 for PFOA and PFOS reduction have demonstrated performance under test conditions. Carbon filter effectiveness depends on contact time, bed volume, and the specific PFAS compounds present. Long chain PFAS like PFOA and PFOS adsorb to carbon more readily than short chain compounds. Carbon bed exhaustion is not visually detectable; replacement on the manufacturer's schedule is essential. For related filtration principles, see our iron filter installation guide for Central Florida wells.

For most households where the concern is drinking and cooking water, a certified point of use RO system at the kitchen faucet is the most cost effective validated approach. For questions about system selection matched to your specific water chemistry, our water filtration services team can help. Chase Norris brings more than 15 years of well water treatment experience in Central Florida; you can learn more at our about page.

What should I do if my well water tests positive for PFAS?

A positive PFAS result warrants action proportional to the levels found. Here is a practical sequence based on EPA and Florida DOH guidance for private well owners.

Verify and interpret the result. Confirm the lab used EPA Method 533 or 537.1 and that results are reported in parts per trillion. Compare individual compound concentrations against EPA MCLs: 4 ppt for PFOA and PFOS, 10 ppt for PFHxS, PFNA, and HFPO-DA. Results below those levels fall below the federal regulatory threshold for public systems. Results above those levels warrant treatment before continued drinking water use.

Use bottled water for drinking and cooking until a certified treatment system is installed and verified. The primary concern is ingestion through drinking and cooking water. Bathing and laundry are not the primary PFAS exposure pathways per current EPA guidance on PFAS in private wells.

Install a certified treatment system. An NSF/ANSI 58-certified RO system at the kitchen tap is the most validated residential option for drinking water. For the range of treatment options Quality Filters and Pumps evaluates for Central Florida well owners, see our water filtration services page. For a long term cost perspective on different approaches, our savings calculator can help. A full system overview is in our well water filtration guide.

Retest after installation and periodically. Test treated water at the tap 30 to 60 days after installation to confirm the system performs as certified. Retest your untreated source water every 3 to 5 years, or after any known PFAS release event in your area. Groundwater plumes shift over time. The CDC PFAS guidance supports periodic retesting as part of responsible private well management.

Quality Filters and Pumps has served Marion, Alachua, Lake, Orange, Osceola, Citrus, and surrounding Central Florida counties for more than 15 years under Florida Water Well Contractor License #7494 held by Chase Norris. For questions about PFAS or any other well water quality issue, explore our well drilling services, pump repair services, and our team background. Additional guides on related topics include our articles on iron and sulfur in Central Florida well water and well pump lifespan in Central Florida conditions. We do not sell products by brand but help homeowners evaluate NSF-certified options matched to their well's chemistry and household needs.